The term for immunity developed after exposure or vaccination is which?

The term for immunity developed after exposure or vaccination is which?

• A. Innate immunity
• B. Adaptive immunity
• C. Acquired immunity
• D. Passive immunity

Answer: (C)

Immunity built after exposure to a pathogen or after vaccination is acquired immunity. This is the part of the immune system that learns and remembers specific enemies, producing targeted B and T cell responses and antibodies. Because it develops in response to exposure, it takes time to activate initially, but then creates memory so future encounters are faster and stronger. In contrast, innate immunity is the body’s general, non-specific defenses present from birth (like skin, mucus, and basic immune cells) and doesn’t rely on prior encounters. Passive immunity involves receiving antibodies from another person or source and isn’t generated by the person’s own immune response, so it’s temporary.

Immunity built after exposure to a pathogen or after vaccination is acquired immunity. This is the part of the immune system that learns and remembers specific enemies, producing targeted B and T cell responses and antibodies. Because it develops in response to exposure, it takes time to activate initially, but then creates memory so future encounters are faster and stronger.

In contrast, innate immunity is the body’s general, non-specific defenses present from birth (like skin, mucus, and basic immune cells) and doesn’t rely on prior encounters. Passive immunity involves receiving antibodies from another person or source and isn’t generated by the person’s own immune response, so it’s temporary.